So I've had the car for a few days and I was driving home from work and heard a loud chatter under the hood. I pulled over and couldn't find were it was coming from. I was only a mile from home and had to stop and get food for the girlfriend at Burger King. When I pulled into the parking lot, the car scraped the exhaust a little and I heard a tink tink sound and something fell out from under the car. I stopped and what do I see behind me is a pulley laying on the ground and the chattering had stopped. I cut the car off and checked all my pulleys under the hood and everything was still there and both belts were tight. I drove the car home and it drove fine so I don't know where it came from. Gonna get the car over to a buddies and get in on a lift and see if we can find where the mystery pulley came from. Heres a pic of it, any idea guys what it's from?